Abstract: The present invention relates to a cooking appliance employing microwaves. According to the present invention, a cooking appliance employing microwaves comprises: a microwave generator for generating and outputting microwaves, provided with an amplifier for performing frequency oscillation and amplification; and a feeder for outputting the outputted microwaves into a cavity. Accordingly, high power microwaves can be easily generated without a separate frequency oscillator.

Abstract: The present invention relates to a cooking apparatus using microwaves. The cooking apparatus using microwaves according to an embodiment of the present invention, comprises: a microwave generator which generates a plurality of microwaves to heat an object inside a cavity and then outputs the generated microwaves; and a controller which calculates heating efficiency with respect to each of the plurality of microwaves based on the microwaves reflected from the inside of the cavity among the outputted microwaves, and then sets heating time with respect to each microwave during a heating period of time according to the calculated heating efficiency.